If i pump the the drivers seat all the way down, when I go over speed bumps or the brow of a hill, or brake or accellerate hard, then the seat sometimes 'dips' a little bit. If I sit in the seat and jump up and down a little bit, you can feel the seat moving. If I raise it almost to the highest setting then this stops, but the seat feels too high for me, I like to sit low, so it feels like a go-kart style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> . Is it supposed to do this? Do I just have the seat set too low? I'm just a bit worried as I think it could be dangerous in the event of an accident. Thanks in advance for any help.